<!doctype html>
<html>
<head>
	<meta charset="UTF-8" />
	<title>背景</title>
	
</head>
<style type="text/css">
	
</style>
<body>
	
	<input type="button" value="red" onclick="col('red')" />
	<input type="button" value="yellow" onclick="col('yellow')" />
	<input type="button" value="blue" onclick="col('blue')" />
	<input class="aaa" type="color" onchange="color()"/>
	
	<script src="beij.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>